3min
Prep
Morning, before you leave
Three minutes of cooling brings skin temperature down. The calm, hydrated base your makeup sits on.
−10.6°C skin surface, immediate
Cooling you can measure.
Three minutes on the skin, and the surface reads cooler by 10.6°C. A calm base before makeup.
Morning, before you leave
- 3 min Prep
- 30 min Soothe
- 60 min Nourish
- MFDS-certified dual functional
- 100% Korean rice extract
- Natural-gum hydrogel, no synthetic polymer
- Irritation index 0.00
- Ships from Seoul
One instrument. Three settings.
Set the time. The sheet does the rest.
30min
Soothe
Evening, after the day
Half an hour to calm what the day left behind and rebalance moisture. The meeting point between a fast life and a gentle routine.
+103.54% moisture, right after use
60min
Nourish
Weekend, before the day that matters
A full hour of nourishment that never dries out. Tonight's ritual becomes tomorrow's glow.
+244.04% moisture, 24 h later
GCP human application tests, Korea Institute of Dermatological Sciences, n=32, May to June 2025. Individual results may vary.
Not a feeling. A reading.
Dermatologist-supervised, GCP-standard human application tests.
| Measure | Reading | Condition |
|---|---|---|
| Moisture | +103.54% | immediately after one use, n=32 |
| Moisture, lasting | +244.04% | 24 hours after use, n=32 |
| Skin temperature | −10.6°C | thermal imaging, immediate |
| Cooling vs. untreated | 291.39% | group comparison, n=32 |
| Sebum | −25.24% | n=32 |
| Irritation index | 0.00 | n=33, non-irritating grade |
Korea Institute of Dermatological Sciences, GCP standard, May to June 2025. Results measured under test conditions; individual results may vary. The image is an illustration of the thermal-camera method, not a participant's scan.
Sixty-five ingredients, in one sheet.
A transparent hydrogel that vacuum-fits to the skin, delivers as much as the skin can absorb, and leaves nothing behind. Two years of development, 65 ingredients, seven peptides, and rice, the oldest wisdom in Korean skincare. Cooled by rice. Designed for skin.
Korean Rice Extract 100%- Korean rice extract and rice powderThe brand signature, blended two ways
- NiacinamideBrightening, MFDS functional ingredient
- AdenosineWrinkle care, MFDS functional ingredient
- Centella, five formsExtract, madecassoside, asiaticoside, asiatic and madecassic acids
- Seven peptidesCopper tripeptide-1, palmitoyl pentapeptide-4, acetyl hexapeptide-8 and four more
- Four ferment familiesGalactomyces, bifida, lactobacillus, yeast
- Water-binding humectantsGlycerin, saccharide isomerate, hyaluronate, beta-glucan, glucomannan
- Irish moss, three formsWith carob gum, the natural-gum hydrogel itself
- Soothing botanicalsPortulaca, calendula, lotus, artemisia
Dual brightening + wrinkle-care functionality recognized by the MFDS. Contains 11 fragrance allergens — please review the full ingredient list before use.
Three minutes is enough.
- 1
Cleanse, then apply
On freshly cleansed skin, unfold the hydrogel sheet and smooth it over your face so it fits snugly.
- 2
Choose your time
3 minutes to prep, 30 to soothe, 60 to nourish. It won't dry out, so wear it as long as your day allows.
- 3
Remove & pat in
Peel off and gently press the remaining essence into the skin. No rinsing, no residue.
For external use only. Avoid the eye area. If irritation occurs, discontinue use.
What the first faces said.
Comments from participants in the 2025 clinical trial, one for each time.
“Three minutes, and my whole skincare routine was done.”
“I tried it on the plane for the first time. It stayed on until we landed.”
“The next morning my makeup went on so well it surprised me.”
Tried KOID? Tell us how the moment felt.
Share your experienceGood to know.
How is a hydrogel mask different from a sheet mask?
Hydrogel holds far more moisture and vacuum-fits to the skin, so active ingredients are delivered deeper. KOID soaks the sheet with essence — your skin takes what it can, and nothing is left behind.
How long should I leave it on?
Whatever your day allows: 3 minutes to prep, 30 to soothe, 60 to nourish. It won't dry out, so longer wear means deeper care.
Is it suitable for sensitive skin?
The formula scored 0.00 on a clinical irritation test (lowest-grade, non-irritating). It does contain natural fragrance allergens — please check the full ingredient list if you have known sensitivities.
What does the cooling come from?
The cooling is physical — from the hydrogel itself and Irish moss, not from menthol. A thermal-imaging test recorded a notable drop in skin temperature.
How is it shipped, and how long does it take?
Orders ship from Korea. Delivery time and cost vary by destination — see checkout for the rate to your country. Free shipping over $35 within Korea.
Can I cancel or return my order?
Before dispatch, email support@koid.co.kr to cancel. For exchanges and returns, see our refund policy. We'll make it right.